421326623123 has 16 divisors (see below), whose sum is σ = 493046062080. Its totient is φ = 352500978816.

The previous prime is 421326623099. The next prime is 421326623129. The reversal of 421326623123 is 321326623124.

It is a happy number.

It is not a de Polignac number, because 421326623123 - 2⁸ = 421326622867 is a prime.

It is a super-2 number, since 2×421326623123² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (421326623129) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23078 + ... + 918251.

It is an arithmetic number, because the mean of its divisors is an integer number (30815378880).

Almost surely, 2^421326623123 is an apocalyptic number.

421326623123 is a gapful number since it is divisible by the number (43) formed by its first and last digit.

421326623123 is a deficient number, since it is larger than the sum of its proper divisors (71719438957).

421326623123 is a wasteful number, since it uses less digits than its factorization.

421326623123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 942866.

The product of its digits is 62208, while the sum is 35.

Subtracting from 421326623123 its reverse (321326623124), we obtain a palindrome (99999999999).

The spelling of 421326623123 in words is "four hundred twenty-one billion, three hundred twenty-six million, six hundred twenty-three thousand, one hundred twenty-three".